Which planes cabin is bigger? Piper Warrior or Cessna 172?

Im about to start training and want to fly the biggest aircraft ( well just plane with biggest or largest interior) im a big and want to be comfortable. I hear the piper warriors interior is bigger then the 172 but im not sure. What do you guys think?

I think the warrior is slightly wider 41.75″ and 45″ tall
The Cessna 172 is 39.5 wide but is 48″ tall.
The Cessna may be easier to enter and exit as it has two doors where as the Warrior only has one. The Warriors I have been in are more comfortable (in seating) at least for me, but that is one only you can really answer. Go out and sit in each, see which one fits you better!

Cessna 182 introduction